Coupled Motion of Vortices in Superposed Superconducting Films

Abstract
The coupling of vortices between two superconducting tin films electrically insulated from one another (i.e., in a dc transformer) has been studied as a function of the applied perpendicular magnetic field, of the current in the primary, and of the temperature. The results are qualitatively interpreted in terms of a vortex-slipping mechanism, and they support the picture of vortex flow as the dissipation process in superconducting films.